icuSources/test/perf/leperf/letrperf.cpp

   1 /**************************************************************************
   2 *
   3 *   © 2016 and later: Unicode, Inc. and others.
   4 *   License & terms of use: http://www.unicode.org/copyright.html#License
   5 *
   6 ***************************************************************************
   7 ***************************************************************************
   8 *
   9 *   Copyright (C) 2013, International Business Machines
  10 *   Corporation and others.  All Rights Reserved.
  11 *
  12 ************************************************************************/
  13 /**
  14  * Usage:
  15  * build against a configured (but not built) ICU.
  16  * example: cc -O2 test_LETableReference.cpp -I. -I/xsrl/II/include -I/xsrl/E/icu/source/tools/ctestfw
  17  */
  18 #include "unicode/utimer.h"
  19 #include "LETableReference.h"
  20 #include <stdio.h>
  21 #include <stdlib.h>
  22
  23 #define ITEM_COUNT 10000
  24
  25 long *items = 0;
  26
  27 struct OneObject {
  28   long items[ITEM_COUNT];
  29 };
  30
  31 struct Long {
  32   long v;
  33 };
  34
  35 struct CompObject {
  36   Long items[ITEM_COUNT];
  37 };
  38
  39
  40 void time_null(void * /*ref*/) {
  41   for(int i=0;i<ITEM_COUNT;i++) {
  42     if(items[i]==2) {
  43       return;
  44     }
  45   }
  46   puts("error");
  47   abort();
  48 }
  49
  50 void time_obj(void * ref) {
  51   OneObject &obj = *((OneObject*)ref);
  52   for(int i=0;i<ITEM_COUNT;i++) {
  53     if(obj.items[i]==2) {
  54       return;
  55     }
  56   }
  57   puts("error");
  58   abort();
  59 }
  60 void time_obj2(void * ref) {
  61   long *items2 = ((OneObject*)ref)->items;
  62   for(int i=0;i<ITEM_COUNT;i++) {
  63     if(items2[i]==2) {
  64       return;
  65     }
  66   }
  67   puts("error");
  68   abort();
  69 }
  70
  71 void time_letr1(void * ref) {
  72   OneObject &obj = *((OneObject*)ref);
  73   LETableReference data((const le_uint8*)ref, sizeof(OneObject));
  74   LEErrorCode success = LE_NO_ERROR;
  75
  76   LEReferenceTo<OneObject> stuff(data, success);
  77   if(LE_FAILURE(success)) {
  78     puts("failure");
  79     abort();
  80   }
  81   long *items2 = ((OneObject*)ref)->items;
  82   for(int i=0;i<ITEM_COUNT;i++) {
  83     if(items[i]==2) {
  84       return;
  85     }
  86   }
  87   puts("error");
  88   abort();
  89 }
  90
  91
  92 void time_letr2(void * ref) {
  93   OneObject &obj = *((OneObject*)ref);
  94   LETableReference data((const le_uint8*)ref, sizeof(OneObject));
  95   LEErrorCode success = LE_NO_ERROR;
  96
  97   long *items2 = ((OneObject*)ref)->items;
  98   for(int i=0;i<ITEM_COUNT;i++) {
  99     LEReferenceTo<OneObject> stuff(data, success);
 100     if(LE_FAILURE(success)) {
 101       puts("failure");
 102       abort();
 103     }
 104     if(items[i]==2) {
 105       return;
 106     }
 107   }
 108   puts("error");
 109   abort();
 110 }
 111
 112 static void time_letr3(void * ref) {
 113   LETableReference data((const le_uint8*)ref, sizeof(OneObject));
 114   LEErrorCode success = LE_NO_ERROR;
 115   LEReferenceTo<CompObject> comp(data, success);
 116   LEReferenceToArrayOf<Long> longs(comp, success, (size_t)0, ITEM_COUNT);
 117   if(LE_FAILURE(success)) {
 118     puts("failure");
 119     abort();
 120   }
 121
 122   for(int i=0;i<ITEM_COUNT;i++) {
 123     const Long &item = longs.getObject(i, success);
 124     if(LE_FAILURE(success)) {
 125       puts("failure");
 126       abort();
 127     }
 128     if(item.v==2) {
 129       return;
 130     }
 131   }
 132   puts("error");
 133   abort();
 134 }
 135
 136
 137 int main() {
 138   double runTime = 2.0;
 139   printf("Test of LETableReference<> timing. %.1fs per run.\n", runTime);
 140   items = new long[ITEM_COUNT];
 141   OneObject *oo = new OneObject();
 142   CompObject *oo2 = new CompObject();
 143   for(int i=0;i<ITEM_COUNT-1;i++) {
 144     items[i] = oo->items[i] = oo2->items[i].v = (i%1024)+3;
 145   }
 146   items[ITEM_COUNT-1] = oo->items[ITEM_COUNT-1] = oo2->items[ITEM_COUNT-1].v = 2; // last one
 147
 148   puts("will call once..");
 149   time_letr3((void*)oo2);
 150   puts("testing all..");
 151
 152   int32_t loopCount;
 153   double time_taken;
 154
 155 #define showTime(x,y)  printf("%s:\ttesting...\r",  #x);   fflush(stdout); \
 156   time_taken = utimer_loopUntilDone(runTime, &loopCount, x, y); \
 157   printf("%s:\t%.1fs\t#%d\t%.1f/s\n", #x, time_taken, loopCount, loopCount/(double)time_taken);
 158
 159   // clear out cache
 160   {
 161     double oldTime = runTime;
 162     runTime = 0.25;
 163     showTime(time_null, NULL);
 164     showTime(time_null, NULL);
 165     showTime(time_null, NULL);
 166     showTime(time_null, NULL);
 167     runTime = oldTime;
 168   }
 169   puts("-- ready to start --");
 170
 171
 172   showTime(time_null, NULL);
 173   showTime(time_obj, (void*)oo);
 174   showTime(time_obj2, (void*)oo);
 175   showTime(time_letr1, (void*)oo2);
 176   showTime(time_letr2, (void*)oo2);
 177   showTime(time_letr3, (void*)oo2);
 178   showTime(time_null, NULL);
 179
 180   delete [] items;
 181   delete oo;
 182   delete oo2;
 183 }